Permit Sonoma — Parcel Report
3845 Bloomfield Rd, Sebastopol (Twin Hills), CA 95472
APN 025-100-006
Source: https://parcelsearch.permitsonoma.org/api/parcelreport/025-100-006
Pulled: 2026-05-11
Identity
Field Value Situs address 3845 BLOOMFIELD RD, TWIN HILLS (USPS: Sebastopol 95472) APN 025-100-006 Owner MOSIMAN STEVEN T TR & MOSIMAN HELEN C TR Lot size 51.15 ac (~2,221,560 sq ft)Year built (improvement) 1925 Building sf (assessor) 804 sf Land value $1,000,630 Improvement value $100,763 Total assessed $1,101,393 Jurisdiction Unincorporated Sonoma County Planning Area 6 — Sebastopol Supervisorial District 2 Tax Rate Area 159003 Parcel center (county) 38.336511, -122.828512 Coords (OnX, supplied) 38.33657, -122.82812 (agrees to ~20 ft)
Zoning & overlays
Field Value Zoning LEA B6 160, OAK SR General Plan Land Use LEA 160 Assessor Use Code 0541 — Pasture With Residence Area & Specific Plan Petaluma Dairy Belt Area Plan Farmlands designation Grazing Land, Other Land Williamson Act Land Contract No Urban Service Area Not Applicable Sphere of Influence Not Applicable Urban Growth Not Applicable Sanitation District Not Applicable (on-site septic) ALUC Referral Area No Coastal Commission Appealable No Bodega Bay PUD No Historic District Not Applicable Redevelopment Plan Not Applicable Tobacco Retail License false
LEA B6 160 = Land Extensive Agriculture, 160-acre minimum parcel size, B6 density tier. The parcel is legal nonconforming at 51.15 acres (under the 160-ac minimum). Combining districts on this parcel: OAK (Valley Oak Habitat), SR (Scenic Resources). Notably, the parcel does not carry the RC50/50 (Riparian Corridor) overlay that the neighboring 4201 Bloomfield Rd parcel does, consistent with the parcel sitting away from Atascadero / Stemple Creek.
Hazards / environment
Field Value Fire Hazard Severity Zone Moderate Fire Protection Response Area State (SRA) — Cal Fire jurisdictionFire District Gold Ridge FPD Fire Event (within burn perimeter) Not Applicable F1 — Floodway No F2 — Floodplain No Flood-Prone Urban Area Not Applicable Liquefaction Very Low Susceptibility Landslide ”Few Landslides, Mostly Landslide” (mixed)California Tiger Salamander No Public Trust Review Area Not Applicable Air Quality Control Board Bay Area AQMD Water Quality Control Board North Coast Region
Water / soils
Field Value Groundwater Availability Zone 2 — Major natural recharge Groundwater Subbasin Priority WILSON GROVE FORMATION HIGHLANDS (Very Low) Wet Weather Zone D — Sebastopol Waiver Prohibition Area Not Applicable NRCS Soils LoD, LoE, LsE, SnD2 (Los Osos / Spreckels clay-loams; sloping; moderate-strong erosion hazard)Parcel-Specific Policy Not Applicable Local Area Development Guideline Not Applicable
Schools / services
Field Value Elementary School District Twin Hills Union High School District West Sonoma Union
(For comparison, the in-laws’ 4201 Bloomfield is in Shoreline Joint Unified — different district. 3845 sits inside the Twin Hills / West Sonoma boundary, a stronger-rated district set, ~9/10 elementary, ~7/10 high school per GreatSchools.)
Permit Sonoma assigned inspectors
Role Name Building Rick Behrens Code Enforcement Ryan Sharp Code Enforcement — Cannabis Michael Tollack Well & Septic Ivan Shoemaker